Deeper than DEEP: A Spectroscopic Survey of z>3 Lyman-α Emitters in the Extended Groth Strip
arXiv (Cornell University)(2023)
摘要
We present a spectroscopic survey of Lyα emitters in the Extended
Groth Strip (EGS) field, targeting the regime near the Epoch of Reionization.
Using Keck/DEIMOS, we observed 947 high-z candidates with photometric
redshifts from 3 < z_phot < 7 and down to an H-band (HST/WFC3 F160W)
magnitude limit of < 27.5. Observations were taken over the course of 8 nights,
with integration times ranging from 4 to 7.8 hours. Our survey secured 137
unique redshifts, 126 of which are Lyα emitters at 2.8 < z < 6.5 with
a mean redshift of z = 4.3. We provide a comprehensive redshift
catalog for our targets, as well as the reduced one- and two- dimensional
spectra for each object. These observations will provide an important auxiliary
dataset for the JWST Directors Discretionary Early Release Science (DD-ERS)
program the Cosmic Evolution Early Release Science Survey (CEERS), which
recently completed near- and mid-IR imaging and spectroscopy of galaxies in the
EGS field.
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关键词
extended groth strip,spectroscopic survey,lyman-$\alpha$
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